Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2a1132a0528fa8…

MALICIOUS

PDF

63.1 KB Created: 2020-10-27 09:06:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 339578908211f0d2042dee7da681c9e8 SHA-1: 38118ea75b9267500b5ab3a1cb255ea6e2ee6894 SHA-256: 9a2a1132a0528fa86347cdf3062cd8a5a45ad0a0a7f797cba5f766299e76e838
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically targeting Amazon credentials. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms a phishing attempt. The document body, though malformed, contains text related to the argument between Agamemnon and Achilles, likely a lure to disguise the phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://wufikasokuwomoz.weebly.com/uploads/1/3/4/3/134359410/mutusuro.pdf.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/strik?keyword=agamemnon+and+achilles+argument In PDF document text
    • https://wufikasokuwomoz.weebly.com/uploads/1/3/4/3/134359410/mutusuro.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/givukitikexolili.pdfIn PDF document text
    • https://bogemokized.weebly.com/uploads/1/3/4/3/134386998/zifavuwe.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/zunulatefomawisubu.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/2632610.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/gotamirepodosarelaxosus.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/artificer_dnd_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/barisan_bilangan_real.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/81832906903.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/90796730195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/foleziwuniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/67401536916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/russian_olive_tree_utah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0878/9150/files/doledavuxeka.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/der_blechtrommel.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/gesifunusefinukugozax.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/42619622672.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/autocad_3d_modeling_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/guia_calistenia_yerai_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/5052686228.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/78787932899.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/85478897534.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/nios_514_assignment_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/character_design_course.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/final_fantasy_14_haukke_manor_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0533/5460/files/field_crops_2_rabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4469/8272/files/rukogokazewud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8742/8257/files/52654434064.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6E7 5340 bytes
SHA-256: 35e49537162a4c59c8a30b2c11fb63e0fe7f019eb841d3d440bb610e10667965
font_01_sfnt_off0000c8e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E0 10600 bytes
SHA-256: 01912a5ab34cd977931037fd2c05f8938a876efe525bdf65f1857027bce0f64f

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